Antenna



FIG. 1 is a front elevation view of an antenna.

FIG. 2 is a top plan view of the antenna of FIG. 1.

FIG. 3 is a bottom plan view of the antenna of FIG. 1.

FIG. 4 is a front perspective view of the antenna of FIG. 1; and,

FIG. 5 is a front elevation view of an antenna within a cover in broken lines.

The broken lines are for illustration purposes only and form no part of the claimed invention. 

CLAIM The ornamental design for an antenna, as shown and described. 